Having a chimney means maintenance and repair in order to keep it in working order and less costly. There are many things on this structure that could need fixing chimney flue repair, broken bricks and firebox are just some of them. It is always better to keep your hand on things and do regular maintenance, in the long run it will save you a penny or two. The culprit behind most household fires each year is a lack of chimney liner repair. There are too many people who take this for granted and sometimes they don’t consider that it should be repaired and maintained at all times. In wood burning fireplaces, the chimney over time builds up something called creosote. This is a corrosive and highly combustible substance that is released over time substance this creosote builds up in the liner of the chimney and can cause deadly fires within the home so be wise and protect your loved ones from this unfortunate thing.